*{
    margin: 0;
    padding: 0;

}
li{
    list-style: none;
}
a{
    text-decoration: none;
    color: black;
}
.container .swiper{
    width: 200px;
    height: 400px;
    border: 3px solid black;
    margin:  auto 200px;
    overflow: hidden;
    position: relative;
}

.container .swiper ul{
     width: 1200px;
     display: flex;
     position: absolute;
     top:0;
     left: -200px;
  
}
.container .swiper ul li{
    width: 200px;
    height: 400px;
}
.container .swiper ul li img{
    width: 200px;
    height: 400px;
}
.container .swiper .prev{
    position: absolute;
    left: 0;
    top:50%;
    transform: translateY(-50%);
    width: 40px;
    height: 60px;
    line-height: 60px;
    font-size: 40px;
    opacity: .5;
}
.container .swiper .next{
    position: absolute;
    right: 0;
    top:50%;
    transform: translateY(-50%);
    width: 40px;
    height: 60px;
    line-height:60px ;
    font-size: 40px;
    opacity: .5;
}
.container .swiper .pointer {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    width: 150px;
    justify-content: space-between;
}

.container .swiper .pointer li {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background-color: darkblue;
}

.container .swiper .pointer .active {
    background-color: red;
}